Finding the Fourth Proportional to 1,147.32, 1,583.52 and 681.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,147.32 : 1,583.52 = 681.60 : x
2. Step 2: Convert to fraction form
   1,147.32/1,583.52 = 681.60/x
3. Step 3: Cross multiply
   1,147.32x = 1,583.52 × 681.60
4. Step 4: Simplify right side
   1,147.32x = 1,079,327.23
5. Step 5: Solve for x
   x = 1,079,327.23/1,147.32
6. Step 6: Final answer
   x = 940.74